http://www.sec.gov/Archives/edgar/data/81033/000089109214005966/e59973_424b5.htm
http://www.sec.gov/Archives/edgar/data/81033/000089109214005967/e59974_424b5.htm
http://www.sec.gov/Archives/edgar/data/765880/000104746914006719/a2221035z424b5.htm
http://www.sec.gov/Archives/edgar/data/1588216/000104746914006758/a2221058z424b4.htm
http://www.sec.gov/Archives/edgar/data/75488/000119312514299655/d771853d424b5.htm
http://www.sec.gov/Archives/edgar/data/1507563/000119312514300259/d731978d424b4.htm
http://www.sec.gov/Archives/edgar/data/1000275/000121465914005667/s86140424b3.htm
http://www.sec.gov/Archives/edgar/data/1000275/000121465914005671/j86141424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000121465914005700/m86142424b2.htm
http://www.sec.gov/Archives/edgar/data/1563855/000143774914014614/sphs20140806_424b3.htm